mother of the bride or groom dresses with jackets

To my breastfeeding mama's and those who dealt with a fussy newborn: any advice on how to get moms milk production to increase to help make a stockpile and to help soothe a fussy 5 week old? We're all about not using formula unless absolutely necessary. We think he has gas and it's not coming out well enough. Thanks in advance! mother of the bride or groom dresses with jackets